Badji L, Ndiaye P I, Lindshield S M, Ba C T, Pruetz J D
Department of Animal Biology, Cheikh Anta Diop University, Fann, Dakar, Senegal.
Anthropology Program, Department of World Languages and Cultures, Iowa State University, Ames, IA, USA.
Primates. 2018 May;59(3):235-241. doi: 10.1007/s10329-017-0647-2. Epub 2017 Dec 27.
We studied the nesting behavior of the critically endangered West African chimpanzee (Pan troglodytes verus). We assumed that the nesting data stemmed from a single, unhabituated community at the Bagnomba hill site in the savanna-woodlands of southeastern Senegal. The aim of this study was to examine chimpanzees' nesting habits in terms of the tree species utilized and sleeping nest heights. We recorded a total of 550 chimpanzee nests at Bagnomba between January 2015 and December 2015. The chimpanzees here made nests in particular tree species more often than others. The majority of nests (63%) were in two tree species: Diospyros mespiliformis and Pterocarpus erinaceus. The average height of nesting trees was 10.54 m (SD 3.91, range, 0.0-29.0 m) and average nest height was 7.90 m (SD 3.62, range, 0.0-25.0 m). The result of a linear regression analysis (r = 0.7874; n = 550; p < 0.05) is consistent with a preference for nesting at a particular height. Bagnomba chimpanzees rarely made ground nests (0.36% of nests), but the presence of any ground nesting was unexpected, given that at least one leopard (Panthera pardus) also occupied the hill. This knowledge will enable stakeholders involved in the protection of chimpanzees specifically and of biodiversity in general to better understand chimpanzee ecology and inform a conservation action plan in Senegal where the survival of this species is threatened.
我们研究了极度濒危的西非黑猩猩（Pan troglodytes verus）的筑巢行为。我们假设筑巢数据来自塞内加尔东南部稀树草原林地巴尼奥姆巴山一个未被驯化的单一群落。本研究的目的是从所利用的树种和睡眠巢高度方面考察黑猩猩的筑巢习性。2015年1月至2015年12月期间，我们在巴尼奥姆巴共记录了550个黑猩猩巢。这里的黑猩猩在某些特定树种上筑巢的频率高于其他树种。大多数巢（63%）筑在两种树种上：西非柿（Diospyros mespiliformis）和刺猬紫檀（Pterocarpus erinaceus）。筑巢树的平均高度为10.54米（标准差3.91，范围0.0 - 29.0米），巢的平均高度为7.90米（标准差3.62，范围0.0 - 25.0米）。线性回归分析结果（r = 0.7874；n = 550；p < 0.05）与在特定高度筑巢的偏好一致。巴尼奥姆巴的黑猩猩很少在地面筑巢（占巢总数的0.36%），但鉴于至少有一只豹（Panthera pardus）也栖息在这座山上，出现任何地面筑巢情况都出乎意料。这些知识将使参与黑猩猩保护特别是生物多样性保护的利益相关者能够更好地了解黑猩猩生态，并为塞内加尔的保护行动计划提供信息，因为该物种在塞内加尔的生存受到威胁。
